Noise and vibration control:
Gespeichert in:
1. Verfasser: | |
---|---|
Format: | Elektronisch E-Book |
Sprache: | English |
Veröffentlicht: |
Singapore
World Scientific
2013
|
Schriftenreihe: | IISc lecture notes series
3 |
Schlagworte: | |
Online-Zugang: | Inhaltsverzeichnis Klappentext |
Beschreibung: | XVI, 277 S. |
ISBN: | 9789814434737 9789814434744 |
Internformat
MARC
LEADER | 00000nmm a2200000 cb4500 | ||
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245 | 1 | 0 | |a Noise and vibration control |c M. L. Munjal |
264 | 1 | |a Singapore |b World Scientific |c 2013 | |
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Datensatz im Suchindex
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adam_text | Contents
Dedication
..........................................................................................................................
v
Series
Preface
...................................................................................................................
vii
Preface
..............................................................................................................................ix
Chapter
1 -
Noise and Its Measurement
............................................................................1
1.1
Plane Wave Propagation
......................................................................................2
1.2
Spherical Wave Propagation
................................................................................4
1.3
Decibel Level
.......................................................................................................8
1.4
Frequency Analysis
..............................................................................................9
1.5
Weighted Sound Pressure Level
.........................................................................12
1.6
Logarithmic Addition, Subtraction and Averaging
............................................13
1.7
Directivity
...........................................................................................................18
1.8
Measurement of Sound Pressure Level
..............................................................20
1.9
Loudness
.............................................................................................................23
1.10
Noise Limits in India
...........................................................................................25
1.10.1
The noise pollution (regulation and control) rales,
2000..........................25
1.10.2
Permissible noise exposure for industrial workers
...................................27
1.10.3
Noise limit for
diesel
generator sets
.........................................................29
1.10.4
Noise limit for portable
gensets
................................................................29
1.10.5
Noise limit for fire crackers
......................................................................30
1.10.6
Noise limit for vehicles
............................................................................31
1.11
Masking
...............................................................................................................33
1.12
Sound Level Meter
..............................................................................................33
1.13
Microphones
........................................................................................................34
1.14
Microphone Sensitivity
.......................................................................................35
1.15
Intensity Meter
....................................................................................................36
References
..................................................................................................................36
Problems in Chapter
1 ................................................................................................37
Chapter
2 -
Vibration and Its Measurement
....................................................................40
ХШ
xiv
Noise and Vibration
Control
2.1
Vibration
of
Single
Degree of Freedom System
................................................41
2.1.1
Free vibration
............................................................................................42
2.1.2
Forced response
.........................................................................................45
2.2
Vibration of a Multiple Degrees of Freedom System
.........................................48
2.2.1
Free response
.............................................................................................49
2.2.2
Forced response of multi-DOF system
......................................................50
2.2.3
Modal expansion
........................................................................................50
2.3
Transmissibility
..................................................................................................52
2.4
Critical Speed
.....................................................................................................58
2.5
Dynamical Analogies
.........................................................................................60
2.6
Vibration of Beams and Plates
...........................................................................63
2.7
Vibration Measurement
......................................................................................69
2.8
Measurement of Damping Measurement of Sound Pressure Level
....................74
2.8.1
Logarithmic decrement method
..................................................................74
2.8.2
Half-power bandwidth method
...................................................................75
References
..................................................................................................................77
Problems in Chapter
2................................................................................................78
Chapter
3 -
Vibration Control
.........................................................................................80
3.1
Vibration Control at the Source
..........................................................................81
3.2
Vibration Isolators
..............................................................................................83
3.2.1
Bonded rubber springs
...............................................................................84
3.2.2
Effect of compliant foundation
...................................................................89
3.2.3
Pneumatic suspension
................................................................................92
3.3
Dynamic Vibration Absorber
(DVA)
..................................................................94
3.4
Impedance Mismatch to Block Transmission of Vibration
.................................98
3.4.1
Viscoelastic interlayer
................................................................................99
3.4.2
Effect of blocking mass on longitudinal waves
........................................101
3.4.3
Effect of blocking mass on
flexura!
waves
...............................................106
3.5
Damping Treatments for Plates
.........................................................................107
3.5.1
Free layer damping (FLD) treatment
........................................................108
3.5.2
Constrained layer damping (CLD) treatment
...........................................109
3.6
Active Vibration Control
..................................................................................112
References
................................................................................................................
П5
Problems in Chapter
3 ..............................................................................................116
Chapter
4 -
Acoustics of Rooms, Partitions, Enclosures and Barriers
...........................118
4.1
Sound Field in a Room
......................................................................................118
4.2
Acoustics of a Partition Wall
............................................................................125
Contents xv
4.3 Design
of Acoustic Enclosures
.........................................................................132
4.4
Noise Reduction of a Partition Wall and Enclosure
..........................................138
4.5
Acoustics of Barriers
.........................................................................................142
References
................................................................................................................148
Problems in Chapter
4 ..............................................................................................148
Chapter
5 -
Mufflers and Silencers
...............................................................................151
5.1
Electro-Acoustic Modeling
...............................................................................152
5.2
Transfer Matrix Modeling
.................................................................................154
5.3
Simple Expansion Chamber (SEC)
...................................................................168
5.4
Extended Tube Expansion Chamber (ETEC)
....................................................171
5.5
Extended Concentric Tube Resonator (ECTR)
.................................................175
5.6
Plug Muffler
......................................................................................................178
5.7
Multiply Connected Muffler
.............................................................................180
5.8
Absorptive Ducts and Mufflers
.........................................................................182
5.9
Combination Mufflers
.......................................................................................189
5.10
Acoustic Source Characteristics of I.C. Engines
...............................................190
5.11
Designing for Adequate Insertion Loss
.............................................................196
5.12
Mufflers for High Pressure Vents and Safety Valves
........................................201
5.13
Design of Muffler Shell and End Plates
............................................................203
5.14 Heimholte
Resonators
.......................................................................................205
5.15
Active Noise Control in a Duct
.........................................................................209
5.16
Pressure Drop Considerations
...........................................................................212
References
................................................................................................................215
Problems in Chapter
5 ..............................................................................................218
Chapter
6 -
Noise Control Strategies
.............................................................................221
6.1
Control of Noise at the Source
..........................................................................221
6.1.1
Select a quieter machine
...........................................................................221
6.1.2
Select lossy materials
...............................................................................
222
6.1.3
Use quieter processes or tools
..................................................................222
6.1.4
Reduce radiation efficiency
......................................................................223
6.1.5
Maintain for quietness
.............................................................................224
6.1.6
Design of flow machinery for quietness
...................................................224
6.2
Control of Noise in the Path
.............................................................................
226
6.3
Noise Control at the Receiver End
....................................................................
227
6.4
Noise Control of an Existing Facility
...............................................................
227
6.5
Estimation and Control of Compressor Noise
..................................................229
6.6
Estimation and Control of Noise of Fans and Blowers
.....................................233
xvi
Noise and Vibration
Control
6.7
Estimation and Control of Noise of Packaged Chillers
.....................................237
6-8
Estimation and Control of Noise of Cooling Towers
........................................237
6.9
Estimation and Control of Pump Noise
.............................................................239
6.10
Estimation and Control of Noise of Prime Movers
...........................................241
6.10.1
Turbines
.................................................................................................241
6.10.2
Diesel engines
.......................................................................................246
6.10.3
Electric motors
.......................................................................................248
6.11
Jet Noise Estimation and Control
......................................................................251
6.12
Estimation and Control of Gear Noise
...............................................................256
6.13
Earthmoving Equipment Noise Estimation and Control
....................................258
6.14
Impact Noise Control
........................................................................................259
6.15
Environmental Impact Assessment
(EIA)
.........................................................261
References
................................................................................................................264
Problems in Chapter
6..............................................................................................265
Nomenclature
................................................................................................................267
Index
..............................................................................................................................271
Vibration
and noise are two interrelated terms in the field of
mechanical engineering. Vibration is caused by unbalanced
inerţial
forces and moments whereas noise is the result of such vibrations.
Noisy machines have always been a matter of concern. Lesser vibration
ensures manufacturing to closer tolerances, lesser wear and tear, and
longer fatigue life. Hence, a quieter machine is more cost-effective in
the long run. It is now well understood that a quieter machine is in
every way a better machine.
This book deals with such industrial and automotive noise and
vibration, their measurement and control. This textbook stresses on
physical concepts and the application thereof to practical problems.
The author s four decades of experience in teaching, research and
industrial consultancy is reflected in the choice of the solved examples
and unsolved problems.
The book targets senior undergraduate students in mechanical
engineering as well as designers of industrial machinery and layouts. It
can readily be used for self-study by practicing designers and engineers.
|
any_adam_object | 1 |
author | Munjal, Manchar L. 1945- |
author_GND | (DE-588)174105673 |
author_facet | Munjal, Manchar L. 1945- |
author_role | aut |
author_sort | Munjal, Manchar L. 1945- |
author_variant | m l m ml mlm |
building | Verbundindex |
bvnumber | BV041283823 |
classification_rvk | UF 5200 ZL 3050 |
ctrlnum | (OCoLC)860387661 (DE-599)GBV756051606 |
dewey-full | 620.23 |
dewey-hundreds | 600 - Technology (Applied sciences) |
dewey-ones | 620 - Engineering and allied operations |
dewey-raw | 620.23 |
dewey-search | 620.23 |
dewey-sort | 3620.23 |
dewey-tens | 620 - Engineering and allied operations |
discipline | Maschinenbau / Maschinenwesen Physik |
format | Electronic eBook |
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language | English |
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physical | XVI, 277 S. |
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spelling | Munjal, Manchar L. 1945- Verfasser (DE-588)174105673 aut Noise and vibration control M. L. Munjal Singapore World Scientific 2013 XVI, 277 S. txt rdacontent c rdamedia cr rdacarrier IISc lecture notes series 3 Sekundärausgabe Maschinenschwingung (DE-588)4130655-7 gnd rswk-swf Dämpfung (DE-588)4010875-2 gnd rswk-swf Maschinendynamik (DE-588)4130692-2 gnd rswk-swf Schwingung (DE-588)4053999-4 gnd rswk-swf Mechanische Schwingung (DE-588)4138305-9 gnd rswk-swf Mechanische Schwingung (DE-588)4138305-9 s DE-604 Schwingung (DE-588)4053999-4 s Dämpfung (DE-588)4010875-2 s Maschinendynamik (DE-588)4130692-2 s Maschinenschwingung (DE-588)4130655-7 s Reproduktion von Munjal, Manchar L., 1945- Noise and vibration control 2013 IISc lecture notes series 3 (DE-604)BV041752236 3 Digitalisierung UB Bayreuth - ADAM Catalogue Enrichment application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=026732959&sequence=000003&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis Digitalisierung UB Bayreuth - ADAM Catalogue Enrichment application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=026732959&sequence=000004&line_number=0002&func_code=DB_RECORDS&service_type=MEDIA Klappentext |
spellingShingle | Munjal, Manchar L. 1945- Noise and vibration control IISc lecture notes series Maschinenschwingung (DE-588)4130655-7 gnd Dämpfung (DE-588)4010875-2 gnd Maschinendynamik (DE-588)4130692-2 gnd Schwingung (DE-588)4053999-4 gnd Mechanische Schwingung (DE-588)4138305-9 gnd |
subject_GND | (DE-588)4130655-7 (DE-588)4010875-2 (DE-588)4130692-2 (DE-588)4053999-4 (DE-588)4138305-9 |
title | Noise and vibration control |
title_auth | Noise and vibration control |
title_exact_search | Noise and vibration control |
title_full | Noise and vibration control M. L. Munjal |
title_fullStr | Noise and vibration control M. L. Munjal |
title_full_unstemmed | Noise and vibration control M. L. Munjal |
title_short | Noise and vibration control |
title_sort | noise and vibration control |
topic | Maschinenschwingung (DE-588)4130655-7 gnd Dämpfung (DE-588)4010875-2 gnd Maschinendynamik (DE-588)4130692-2 gnd Schwingung (DE-588)4053999-4 gnd Mechanische Schwingung (DE-588)4138305-9 gnd |
topic_facet | Maschinenschwingung Dämpfung Maschinendynamik Schwingung Mechanische Schwingung |
url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=026732959&sequence=000003&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=026732959&sequence=000004&line_number=0002&func_code=DB_RECORDS&service_type=MEDIA |
volume_link | (DE-604)BV041752236 |
work_keys_str_mv | AT munjalmancharl noiseandvibrationcontrol |